/[gentoo-x86]/eclass/flag-o-matic.eclass
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Revision 1.25 - (show annotations) (download)
Wed Aug 20 04:11:27 2003 UTC (11 years, 4 months ago) by agriffis
Branch: MAIN
Changes since 1.24: +8 -7 lines
minor fixes

1 # Copyright 1999-2003 Gentoo Technologies, Inc.
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /home/cvsroot/gentoo-x86/eclass/flag-o-matic.eclass,v 1.24 2003/07/22 12:48:11 aliz Exp $
4 #
5 # Author Bart Verwilst <verwilst@gentoo.org>
6
7 ECLASS=flag-o-matic
8 INHERITED="$INHERITED $ECLASS"
9
10 #
11 #### filter-flags <flags> ####
12 # Remove particular flags from C[XX]FLAGS
13 # Matches only complete flags
14 #
15 #### append-flags <flags> ####
16 # Add extra flags to your current C[XX]FLAGS
17 #
18 #### replace-flags <orig.flag> <new.flag> ###
19 # Replace a flag by another one
20 #
21 #### is-flag <flag> ####
22 # Returns "true" if flag is set in C[XX]FLAGS
23 # Matches only complete a flag
24 #
25 #### strip-flags ####
26 # Strip C[XX]FLAGS of everything except known
27 # good options.
28 #
29 #### get-flag <flag> ####
30 # Find and echo the value for a particular flag
31 #
32 #### replace-sparc64-flags ####
33 # Sets mcpu to v8 and uses the original value
34 # as mtune if none specified.
35 #
36
37
38 # C[XX]FLAGS that we allow in strip-flags
39 ALLOWED_FLAGS="-O -O1 -O2 -mcpu -march -mtune -fstack-protector -pipe -g"
40 case "${ARCH}" in
41 mips) ALLOWED_FLAGS="${ALLOWED_FLAGS} -mips1 -mips2 -mips3 -mips4 -mabi" ;;
42 amd64) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
43 alpha) ALLOWED_FLAGS="${ALLOWED_FLAGS} -fPIC" ;;
44 esac
45
46 # C[XX]FLAGS that we are think is ok, but needs testing
47 # NOTE: currently -Os have issues with gcc3 and K6* arch's
48 UNSTABLE_FLAGS="-Os -O3 -freorder-blocks -fprefetch-loop-arrays"
49
50 filter-mfpmath() {
51 for a in $CFLAGS; do
52 if [ "${a:0:8}" == "-mfpmath" ]; then
53 orig_mfpmath=$a
54 fi
55 done
56
57 mfpmath="$( echo $orig_mfpmath | awk -F '=' '{print $2}' | tr "," " " )"
58 for b in $@; do
59 mfpmath="${mfpmath/$b}"
60 done
61
62 if [ -z "${mfpmath/ }" ]; then
63 filter-flags "$orig_mfpmath"
64 else
65 new_mfpmath="-mfpmath=$( echo $mfpmath | sed -e "s/ /,/g" -e "s/,,/,/g" )"
66 replace-flags "$orig_mfpmath" "$new_mfpmath"
67 fi
68 }
69
70 filter-flags() {
71 # we do this fancy spacing stuff so as to not filter
72 # out part of a flag ... we want flag atoms ! :D
73 CFLAGS=" ${CFLAGS} "
74 CXXFLAGS=" ${CXXFLAGS} "
75 for x in $@ ; do
76 CFLAGS="${CFLAGS/ ${x} / }"
77 CXXFLAGS="${CXXFLAGS/ ${x} / }"
78 done
79 CFLAGS="${CFLAGS:1:${#CFLAGS}-2}"
80 CXXFLAGS="${CXXFLAGS:1:${#CXXFLAGS}-2}"
81 }
82
83 append-flags() {
84 CFLAGS="${CFLAGS} $@"
85 CXXFLAGS="${CXXFLAGS} $@"
86 }
87
88 replace-flags() {
89 CFLAGS="${CFLAGS/${1}/${2} }"
90 CXXFLAGS="${CXXFLAGS/${1}/${2} }"
91 }
92
93 is-flag() {
94 for x in ${CFLAGS} ${CXXFLAGS} ; do
95 if [ "${x}" == "$1" ] ; then
96 echo true
97 return 0
98 fi
99 done
100 return 1
101 }
102
103 strip-flags() {
104 local NEW_CFLAGS=""
105 local NEW_CXXFLAGS=""
106
107 # Allow unstable C[XX]FLAGS if we are using unstable profile ...
108 if [ `has ~${ARCH} ${ACCEPT_KEYWORDS}` ] ; then
109 [ `use debug` ] && einfo "Enabling the use of some unstable flags"
110 ALLOWED_FLAGS="${ALLOWED_FLAGS} ${UNSTABLE_FLAGS}"
111 fi
112
113 set -f
114
115 for x in ${CFLAGS}
116 do
117 for y in ${ALLOWED_FLAGS}
118 do
119 flag=${x%%=*}
120 if [ "${flag%%${y}}" = "" ]
121 then
122 NEW_CFLAGS="${NEW_CFLAGS} ${x}"
123 break
124 fi
125 done
126 done
127
128 for x in ${CXXFLAGS}
129 do
130 for y in ${ALLOWED_FLAGS}
131 do
132 flag=${x%%=*}
133 if [ "${flag%%${y}}" = "" ]
134 then
135 NEW_CXXFLAGS="${NEW_CXXFLAGS} ${x}"
136 break
137 fi
138 done
139 done
140
141 set +f
142
143 [ `use debug` ] \
144 && einfo "CFLAGS=\"${NEW_CFLAGS}\"" \
145 && einfo "CXXFLAGS=\"${NEW_CXXFLAGS}\""
146
147 export CFLAGS="${NEW_CFLAGS}"
148 export CXXFLAGS="${NEW_CXXFLAGS}"
149 }
150
151 get-flag() {
152 local findflag="$1"
153
154 for f in ${CFLAGS} ${CXXFLAGS} ; do
155 if [ "${f/${findflag}}" != "${f}" ] ; then
156 echo "${f/-${findflag}=}"
157 return
158 fi
159 done
160 }
161
162 replace-sparc64-flags() {
163 local SPARC64_CPUS="ultrasparc v9"
164
165 if [ "${CFLAGS/mtune}" != "${CFLAGS}" ]
166 then
167 for x in ${SPARC64_CPUS}
168 do
169 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8}"
170 done
171 else
172 for x in ${SPARC64_CPUS}
173 do
174 CFLAGS="${CFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
175 done
176 fi
177
178 if [ "${CXXFLAGS/mtune}" != "${CXXFLAGS}" ]
179 then
180 for x in ${SPARC64_CPUS}
181 do
182 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8}"
183 done
184 else
185 for x in ${SPARC64_CPUS}
186 do
187 CXXFLAGS="${CXXFLAGS/-mcpu=${x}/-mcpu=v8 -mtune=${x}}"
188 done
189 fi
190 }

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